Iron

A solution containing oxalate complexes of rare earths, yttrium and iron (III) is obtained during the processing of wet process phosphoric acid for uranium recovery by solvent extraction. A process is described to recover oxalic acid from such a solution. The process is based on the conversion of ir

Biological wastewater treatment plants (BWWTP) are widely used to treat effluents from chemical process industry. However, there exist refractory substances, such as phenolic compounds, which require previous treatments. Advanced oxidation processes (AOP) are thoroughly being studied as pre-treatmen

Ethylenediaminedisuccinic acid (EDDS) was used to dissolve magnetite reductively. Fe2+ ions increased the dissolution rate, and this increase depended on the solution acidity, temperature and [EDDS]:[Fe2+] ratios. The EDDS–Fe2+ complex was able to dissolve magnetite film coated on an iron surface. I